“You have a component rendering a large table (10,000 rows) that updates every 100ms. How do you keep the UI responsive?” Hack answer: Use OnPush , detach change detection for the table, update the data model, then call detectChanges() only once per batch. Alternatively, use trackBy with *ngFor and row‑level ChangeDetectorRef for granular updates. Even better: push updates via RxJS and async pipe, limiting frame drops.
: Cleanup phase to unsubscribe from Observables and detach event handlers to prevent memory leaks. 2. Advanced RxJS and Reactive State Management decoded frontend angular interview hacking
Change detection is the most heavily scrutinized topic in senior Angular interviews. You must demonstrate that you understand how Angular checks the component tree and how to optimize it. Zone.js vs. Zoneless Angular “You have a component rendering a large table
